Re: [PATCH] Hugepages should be accounted as unevictable pages.

[Rik van Riel]

Alok Kataria wrote:
> On Tue, 2009-06-23 at 14:24 -0700, Rik van Riel wrote:

> > I can see something reasonable on both sides of this
> > particular debate.  However, even with this patch the
> > "unevictable" statistic does not reclaim the total
> > number of pages that are unevictable pages from a
> > zone, so I am not sure how it helps you achieve your
> > goal.
>
> Yes but most of the other memory (page table and others) which is
> unevictable is actually static in nature.  IOW, the amount of this other
> kind of kernel unevictable pages can be actually interpolated from the
> amount of physical memory on the system. 

That would be a fair argument, if it were true.

Things like page tables and dentry/inode caches vary
according to the use case and are allocated as needed.
They are in no way "static in nature".

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